688 lines
18 KiB
C
688 lines
18 KiB
C
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#include "py4yap.h"
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PyObject *py_Main;
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void pyErrorHandler__(int line, const char *file, const char *code) {
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// this code is called if a Python error is found.
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fprintf(stderr, " Python error detected at %s %s:%d\n\n", code, file, line);
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PyErr_Print();
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}
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static foreign_t python_len(term_t tobj, term_t tf) {
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Py_ssize_t len;
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PyObject *o;
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o = term_to_python(tobj, true, NULL);
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if (o == NULL) {
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pyErrorAndReturn(false, false);
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}
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len = PyObject_Length(o);
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pyErrorAndReturn(PL_unify_int64(tf, len), false);
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}
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static foreign_t python_dir(term_t tobj, term_t tf) {
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PyObject *dir;
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PyObject *o;
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o = term_to_python(tobj, true, NULL);
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if (o == NULL) {
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pyErrorAndReturn(false, false);
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}
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dir = PyObject_Dir(o);
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{
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foreign_t rc = address_to_term(dir, tf);
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;
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_index(term_t tobj, term_t tindex, term_t val) {
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PyObject *i;
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PyObject *o;
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PyObject *f;
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o = term_to_python(tobj, true, NULL);
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if (o == NULL) {
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pyErrorAndReturn(false, false);
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}
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if (!PySequence_Check(o)) {
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pyErrorAndReturn(false, false);
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}
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i = term_to_python(tindex, true, NULL);
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if (i == NULL) {
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pyErrorAndReturn(false, false);
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}
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#if PY_MAJOR_VERSION < 3
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f = PyObject_CallMethodObjArgs(o, PyString_FromString("getitem"), i);
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#else
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f = PyObject_CallMethodObjArgs(o, PyUnicode_FromString("getitem"), i);
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#endif
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{
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foreign_t rc = address_to_term(f, val);
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;
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_is(term_t tobj, term_t tf) {
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PyObject *o;
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term_t lim = python_acquire_GIL();
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o = term_to_python(tobj, true, NULL);
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if (!o) {
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python_release_GIL(lim);
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pyErrorAndReturn(false, false);
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}
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foreign_t rc = python_to_term(o, tf);
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if (rc)
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PyErr_Clear();
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python_release_GIL(lim);
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pyErrorAndReturn(rc, false);
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}
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static foreign_t python_proc(term_t tobj) {
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PyObject *o;
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term_t lim = python_acquire_GIL();
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o = term_to_python(tobj, true, NULL);
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python_release_GIL(lim);
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bool rc = o != NULL;
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pyErrorAndReturn(rc , false);
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}
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static foreign_t python_slice(term_t parent, term_t indx, term_t tobj) {
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PyObject *pF, *pI;
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PyObject *p;
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// get Scope ...
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pI = term_to_python(indx, true, NULL);
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// got Scope.Exp
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// get Scope ...
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p = term_to_python(parent, true, NULL);
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// Exp
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if (!pI || !p) {
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{ pyErrorAndReturn(false, false); }
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} else if ((pF = PySequence_GetSlice(p, 0, 0)) == NULL) {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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Py_DecRef(pI);
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Py_DecRef(p);
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Py_INCREF(pF);
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{
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foreign_t rc;
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rc = address_to_term(pF, tobj);
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_apply(term_t tin, term_t targs, term_t keywds,
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term_t tf) {
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PyObject *pF;
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PyObject *pArgs, *pKeywords;
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PyObject *pValue;
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int i, arity;
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atom_t aname;
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foreign_t out;
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term_t targ = PL_new_term_ref();
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pF = term_to_python(tin, true, NULL);
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PyErr_Clear();
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if (pF == NULL) {
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{ pyErrorAndReturn(false, false); }
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}
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if (PL_is_atom(targs)) {
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pArgs = NULL;
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} else {
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if (!PL_get_name_arity(targs, &aname, &arity)) {
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{ pyErrorAndReturn(false, false); }
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}
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if (arity == 1 && PL_get_arg(1, targs, targ) && PL_is_variable(targ)) {
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/* ignore (_) */
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pArgs = NULL;
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} else {
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pArgs = PyTuple_New(arity);
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DebugPrintf("Tuple %p\n", pArgs);
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if (!pArgs) {
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pyErrorAndReturn(false, false);
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}
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for (i = 0; i < arity; i++) {
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PyObject *pArg;
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if (!PL_get_arg(i + 1, targs, targ)) {
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pyErrorAndReturn(false, false);
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}
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pArg = term_to_python(targ, true, NULL);
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if (pArg == NULL) {
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pyErrorAndReturn(false, false);
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}
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/* pArg reference stolen here: */
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PyTuple_SetItem(pArgs, i, pArg);
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}
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}
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}
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if (PL_is_atom(keywds)) {
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pKeywords = NULL;
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} else {
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pKeywords = term_to_python(keywds, true, NULL);
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}
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if (PyCallable_Check(pF)) {
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pValue = PyEval_CallObjectWithKeywords(pF, pArgs, pKeywords);
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// PyObject_Print(pF,stderr,0);fprintf(stderr, "\n");
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// PyObject_Print(pArgs,stderr,0);fprintf(stderr, " ");
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// PyObject_Print(pKeywords,stderr,0);fprintf(stderr, "\n");
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if (!pValue)
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PyErr_Print();
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else
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Py_IncRef(pValue);
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} else if (pArgs == NULL) {
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pValue = pF;
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if (pF) {
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Py_IncRef(pValue);
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}
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} else {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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if (pArgs)
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Py_DECREF(pArgs);
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Py_DECREF(pF);
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if (pValue == NULL) {
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pyErrorAndReturn(false, false);
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}
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out = address_to_term(pValue, tf);
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pyErrorAndReturn(out, false);
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}
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static foreign_t assign_python(term_t exp, term_t name) {
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term_t stackp = python_acquire_GIL();
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PyObject *e = term_to_python(exp, true, NULL);
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if (e == NULL) {
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python_release_GIL(stackp);
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pyErrorAndReturn(false, false);
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}
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bool b = python_assign(name, e, NULL);
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python_release_GIL(stackp);
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pyErrorAndReturn(b, false);
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}
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static foreign_t python_builtin_eval(term_t caller, term_t dict, term_t out) {
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PyErr_Clear();
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PyObject *pI, *pArgs, *pOut;
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PyObject *env;
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atom_t name;
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char *s;
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int i, arity;
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term_t targ = PL_new_term_ref();
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if ((env = py_Builtin) == NULL) {
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// no point in even trying
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{ pyErrorAndReturn(false, false); }
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}
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if (PL_get_name_arity(caller, &name, &arity)) {
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if (!(s = PL_atom_chars(name))) {
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pyErrorAndReturn(false, false);
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}
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if ((pI = PyObject_GetAttrString(env, s)) == NULL) {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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Py_INCREF(pI);
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} else {
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// Prolog should make sure this never happens.
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{ pyErrorAndReturn(false, false); }
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}
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pArgs = PyTuple_New(arity);
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DebugPrintf("Tuple %p\n", pArgs);
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for (i = 0; i < arity; i++) {
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PyObject *pArg;
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if (!PL_get_arg(i + 1, caller, targ)) {
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pyErrorAndReturn(false, false);
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}
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/* ignore (_) */
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if (i == 0 && PL_is_variable(targ)) {
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pArg = Py_None;
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} else {
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pArg = term_to_python(targ, true, NULL);
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if (pArg == NULL) {
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pyErrorAndReturn(false, false);
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}
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}
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/* pArg reference stolen here: */
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if (PyTuple_SetItem(pArgs, i, pArg)) {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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}
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pOut = PyObject_CallObject(pI, pArgs);
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Py_DECREF(pArgs);
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Py_DECREF(pI);
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if (pOut == NULL) {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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{
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foreign_t rc = address_to_term(pOut, out);
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;
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_access(term_t obj, term_t f, term_t out) {
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PyErr_Clear();
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PyObject *o = term_to_python(obj, true, NULL), *pValue, *pArgs, *pF;
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atom_t name;
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char *s = NULL;
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int i, arity;
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term_t targ = PL_new_term_ref();
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if (o == NULL) {
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pyErrorAndReturn(false, false);
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}
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if (PL_is_atom(f)) {
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if (!PL_get_atom_chars(f, &s)) {
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pyErrorAndReturn(false, false);
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}
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if ((pValue = PyObject_GetAttrString(o, s)) == NULL) {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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Py_INCREF(pValue);
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{ pyErrorAndReturn(python_to_term(pValue, out), false); }
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}
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if (!PL_get_name_arity(f, &name, &arity)) {
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{ pyErrorAndReturn(false, false); }
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}
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s = PL_atom_chars(name);
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if (!s) {
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pyErrorAndReturn(false, false);
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}
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if ((pF = PyObject_GetAttrString(o, s)) == NULL) {
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DebugPrintf("Function %p\n", pArgs);
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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pArgs = PyTuple_New(arity);
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DebugPrintf("Tuple %p\n", pArgs);
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for (i = 0; i < arity; i++) {
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PyObject *pArg;
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if (!PL_get_arg(i + 1, f, targ)) {
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pyErrorAndReturn(false, false);
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}
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/* ignore (_) */
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if (i == 0 && PL_is_variable(targ)) {
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pArgs = Py_None;
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}
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pArg = term_to_python(targ, true, NULL);
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if (pArg == NULL) {
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pyErrorAndReturn(false, false);
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}
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/* pArg reference stolen here: */
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PyTuple_SetItem(pArgs, i, pArg);
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}
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pValue = PyObject_CallObject(pF, pArgs);
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Py_DECREF(pArgs);
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Py_DECREF(pF);
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if (pValue == NULL) {
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{ pyErrorAndReturn(false, false); }
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}
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{ pyErrorAndReturn(python_to_term(pValue, out), false); }
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}
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static foreign_t python_field(term_t parent, term_t att, term_t tobj) {
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PyObject *pF;
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atom_t name;
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char *s;
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int arity;
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if (!PL_get_name_arity(att, &name, &arity)) {
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{ pyErrorAndReturn(false, false); }
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} else {
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PyObject *p;
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// got Scope.Exp
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// get Scope ...
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p = term_to_python(parent, true, NULL);
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// Exp
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if (!PL_get_name_arity(att, &name, &arity)) {
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{ pyErrorAndReturn(false, false); }
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}
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s = PL_atom_chars(name);
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if (arity == 1 && !strcmp(s, "()")) {
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if (!PL_get_arg(1, att, att)) {
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pyErrorAndReturn(false, false);
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}
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if (!PL_get_name_arity(att, &name, &arity)) {
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{ pyErrorAndReturn(false, false); }
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}
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s = PL_atom_chars(name);
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}
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if (!s || !p) {
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{ pyErrorAndReturn(false, false); }
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} else if ((pF = PyObject_GetAttrString(p, s)) == NULL) {
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PyErr_Clear();
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{ pyErrorAndReturn(false, false); }
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}
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}
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{
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foreign_t rc;
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rc = address_to_term(pF, tobj);
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_main_module(term_t mod) {
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{
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foreign_t rc;
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PyErr_Clear();
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rc = address_to_term(py_Main, mod);
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_function(term_t tobj) {
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PyErr_Clear();
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PyObject *obj = term_to_python(tobj, true, NULL);
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foreign_t rc = PyFunction_Check(obj);
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pyErrorAndReturn(rc, false);
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}
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foreign_t python_builtin(term_t out) {
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{
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foreign_t rc;
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PyErr_Clear();
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rc = address_to_term(py_Builtin, out);
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pyErrorAndReturn(rc, false);
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}
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}
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static foreign_t python_run_file(term_t file) {
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char *s;
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size_t len;
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char si[256];
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s = si;
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PyErr_Clear();
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if (PL_get_nchars(file, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
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#if PY_MAJOR_VERSION < 3
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PyObject *PyFileObject = PyFile_FromString(si, "r");
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PyRun_SimpleFileEx(PyFile_AsFile(PyFileObject), "test.py", 1);
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#else
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FILE *f = fopen(s, "r");
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if (f == NULL) {
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pyErrorAndReturn(false, false);
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}
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PyRun_SimpleFileEx(f, s, 1);
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#endif
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{
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{ pyErrorAndReturn(true, false); }
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}
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}
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{ pyErrorAndReturn(false, false); }
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}
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extern PyThreadState *YAP_save;
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static foreign_t python_run_command(term_t cmd) {
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char *s;
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bool rc = false;
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size_t len;
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char si[256];
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PyErr_Clear();
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s = si;
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if (PL_get_nchars(cmd, &len, &s, CVT_ALL | CVT_EXCEPTION)) {
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PyRun_SimpleString(s);
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rc = true;
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}
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pyErrorAndReturn(rc, false);
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}
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static foreign_t python_run_script(term_t cmd, term_t fun) {
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char si[256], sf[256];
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size_t len = 255, len1 = 255;
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PyObject *pName, *pModule, *pFunc;
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PyObject *pArgs = NULL, *pValue;
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char *s;
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PyErr_Clear();
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s = si;
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if (PL_get_nchars(cmd, &len, &s, CVT_ALL | CVT_EXCEPTION) &&
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(s = sf) != NULL &&
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PL_get_nchars(fun, &len1, &s, CVT_ALL | CVT_EXCEPTION)) {
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#if PY_MAJOR_VERSION < 3
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pName = PyString_FromString("rbm");
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#else
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// asssumes UTF-8
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pName = PyUnicode_FromString("rbm");
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#endif
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/* Error checking of pName left out */
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pModule = PyImport_Import(pName);
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PyErr_Clear();
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Py_DECREF(pName);
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if (pModule != NULL) {
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pFunc = PyObject_GetAttrString(pModule, sf);
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/* pFunc is a new reference */
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if (pFunc && PyCallable_Check(pFunc)) {
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pValue = PyObject_CallObject(pFunc, pArgs);
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if (pValue != NULL) {
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Py_DECREF(pValue);
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} else {
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Py_DECREF(pFunc);
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Py_DECREF(pModule);
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PyErr_Print();
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fprintf(stderr, "Call failed\n");
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{ pyErrorAndReturn(false, false); }
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}
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} else {
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pyErrorHandler();
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if (PyErr_Occurred())
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PyErr_Print();
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fprintf(stderr, "Cannot find function \"%s\"\n", sf);
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}
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Py_XDECREF(pFunc);
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Py_DECREF(pModule);
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} else {
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PyErr_Print();
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{ pyErrorAndReturn(false, false); }
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}
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{ pyErrorAndReturn(true, false); }
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}
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{ pyErrorAndReturn(false, false); }
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}
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static foreign_t python_export(term_t t, term_t pl) {
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foreign_t rc = false;
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PyErr_Clear();
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if (PL_is_functor(t, FUNCTOR_pointer1)) {
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void *ptr;
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term_t targ = PL_new_term_ref();
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if (!PL_get_arg(1, t, targ)) {
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pyErrorAndReturn(false, false);
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}
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if (!PL_get_pointer(targ, &ptr)) {
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pyErrorAndReturn(false, false);
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}
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Py_INCREF((PyObject *)ptr);
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/* pyErrorAndReturn( __main__, false) */
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rc = python_to_term((PyObject *)ptr, pl);
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}
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pyErrorAndReturn(rc, false);
|
|
}
|
|
|
|
|
|
/**
|
|
* @pred python_import(MName, Mod)
|
|
* Import a python module to the YAP environment.
|
|
*
|
|
* @param mname module name, either an atom or a sequence of atoms,
|
|
* eg os.sys
|
|
* @param mod the pointer to the Python object
|
|
* @return success?
|
|
*/
|
|
static int python_import(term_t mname, term_t mod) {
|
|
PyObject *pName;
|
|
|
|
term_t t0 = python_acquire_GIL();
|
|
term_t arg = PL_new_term_ref();
|
|
char s0[MAXPATHLEN], *s = s0;
|
|
while (true) {
|
|
size_t len;
|
|
|
|
len = (MAXPATHLEN - 1) - (s - s0);
|
|
if (PL_is_pair(mname)) {
|
|
char *sa = NULL;
|
|
if (!PL_get_arg(1, mname, arg) || !PL_get_atom_chars(arg, &sa) ||
|
|
!PL_get_arg(2, mname, mname)) {
|
|
python_release_GIL(t0);
|
|
pyErrorAndReturn(false, false);
|
|
}
|
|
PL_get_atom_chars(arg, &sa);
|
|
strcpy(s, sa);
|
|
s += strlen(s);
|
|
*s++ = '.';
|
|
s[0] = '\0';
|
|
} else if (!PL_get_nchars(mname, &len, &s,
|
|
CVT_ATOM | CVT_STRING| CVT_EXCEPTION | REP_UTF8)) {
|
|
python_release_GIL(t0);
|
|
pyErrorAndReturn(false, false);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
#if PY_MAJOR_VERSION < 3
|
|
pName = PyString_FromString(s0);
|
|
#else
|
|
pName = PyUnicode_FromString(s0);
|
|
#endif
|
|
python_release_GIL(t0);
|
|
if (pName == NULL) {
|
|
pyErrorAndReturn(false, false);
|
|
}
|
|
|
|
PyObject *pModule = PyImport_Import(pName);
|
|
|
|
Py_DECREF(pName);
|
|
if (pModule == NULL) {
|
|
#if EXTRA_MESSSAGES
|
|
if (PyErr_Occurred())
|
|
PyErr_Print();
|
|
PyErr_Clear();
|
|
#endif
|
|
{ pyErrorAndReturn(false, false); }
|
|
}
|
|
{
|
|
foreign_t rc = address_to_term(pModule, mod);
|
|
pyErrorAndReturn(rc, false);
|
|
}
|
|
}
|
|
|
|
static foreign_t python_to_rhs(term_t inp, term_t t) {
|
|
PyObject *pVal;
|
|
PyErr_Clear();
|
|
pVal = term_to_python(inp, true, NULL);
|
|
if (pVal == NULL)
|
|
pyErrorAndReturn(false, false);
|
|
pyErrorAndReturn(address_to_term(pVal, t), false);
|
|
}
|
|
|
|
// static PyThreadState *_saveP = NULL;
|
|
static bool _threaded = false;
|
|
|
|
/*
|
|
static YAP_Int
|
|
p_python_ensure(term_t ptr)
|
|
{
|
|
PyGILState_STATE _tState = PyGILState_Ensure();
|
|
pyErrorAndReturn( PL_unify_int64(ptr, _tState), false);
|
|
}
|
|
|
|
static YAP_Int
|
|
p_python_release(term_t ptr)
|
|
{
|
|
|
|
PyGILState_STATE _tState;
|
|
PL_get_int64( ptr, &_tState);
|
|
PyGILState_Release( _tState );
|
|
pyErrorAndReturn( true, false);
|
|
}
|
|
*/
|
|
|
|
int _locked = 0;
|
|
PyThreadState *tstate;
|
|
|
|
static YAP_Int p_python_threaded(void) {
|
|
|
|
PyErr_Clear();
|
|
// PyEval_ReleaseThread(tstate);
|
|
// _threaded = true;
|
|
// _locked = 0;
|
|
pyErrorAndReturn(true, false);
|
|
}
|
|
|
|
static PyGILState_STATE gstate;
|
|
|
|
term_t python_acquire_GIL(void) {
|
|
term_t curSlot = PL_new_term_ref();
|
|
if (!_threaded)
|
|
pyErrorAndReturn(curSlot, false);
|
|
// extern int Yap_do_low_level_trace;
|
|
// Yap_do_low_level_trace = 1;
|
|
// f[rintf( stderr, "++%d\n", ++_locked);
|
|
// if (_locked > 0) { _locked++ ; }
|
|
// else
|
|
gstate = PyGILState_Ensure();
|
|
pyErrorAndReturn(curSlot, false);
|
|
}
|
|
|
|
bool python_release_GIL(term_t curBlock) {
|
|
PyErr_Clear();
|
|
PL_reset_term_refs(curBlock);
|
|
if (_threaded) {
|
|
PyGILState_Release(gstate);
|
|
}
|
|
pyErrorAndReturn(true, false);
|
|
}
|
|
|
|
//: prolog: release python
|
|
|
|
install_t install_pypreds(void) {
|
|
PL_register_foreign("python_builtin_eval", 3, python_builtin_eval, 0);
|
|
PL_register_foreign("python_builtin", 1, python_builtin, 0);
|
|
PL_register_foreign("python_import", 2, python_import, 0);
|
|
PL_register_foreign("python_to_rhs", 2, python_to_rhs, 0);
|
|
PL_register_foreign("python_len", 2, python_len, 0);
|
|
PL_register_foreign("python_is", 2, python_is, 0);
|
|
PL_register_foreign("python_dir", 2, python_dir, 0);
|
|
PL_register_foreign("python_apply", 4, python_apply, 0);
|
|
PL_register_foreign("python_index", 3, python_index, 0);
|
|
PL_register_foreign("python_field", 3, python_field, 0);
|
|
PL_register_foreign("python_assign", 2, assign_python, 0);
|
|
PL_register_foreign("python_export", 2, python_export, 0);
|
|
PL_register_foreign("python_function", 1, python_function, 0);
|
|
PL_register_foreign("python_slice", 4, python_slice, 0);
|
|
PL_register_foreign("python_run_file", 1, python_run_file, 0);
|
|
PL_register_foreign("python_proc", 1, python_proc, 0);
|
|
PL_register_foreign("python_run_command", 1, python_run_command, 0);
|
|
PL_register_foreign("python_run_script", 2, python_run_script, 0);
|
|
PL_register_foreign("python_main_module", 1, python_main_module, 0);
|
|
PL_register_foreign("python_import", 2, python_import, 0);
|
|
PL_register_foreign("python_access", 3, python_access, 0);
|
|
PL_register_foreign("python_threaded", 0, p_python_threaded, 0);
|
|
}
|